Publications by authors named "Rosenfeld G"

Background: Over the last decade, the treatment options for inflammatory bowel disease (IBD) have significantly progressed with the emergence of new medications designed to target various immune pathways and mitigate inflammation. Adalimumab (ADA) is a tumor necrosis factor alpha antagonist and stands as an effective treatment for IBD. In April 2021, the province of British Columbia implemented a mandatory non-medical switch policy of the ADA originator Humira to ADA biosimilars.

View Article and Find Full Text PDF

Background: Complementary and alternative medicine (CAM) use is common in inflammatory bowel disease (IBD) patients and impacts compliance with conventional treatment. Gastroenterologists should understand the motivational factors of CAM use-factors that patients away from standard therapy or towards CAM. Our study describes the motivations behind CAM use for IBD and evaluates differences between Crohn's disease (CD) and ulcerative colitis (UC) patients.

View Article and Find Full Text PDF

Unlabelled: Radiology may better define tuberculosis (TB) severity and guide duration of treatment. We aimed to systematically study baseline chest X-rays (CXR) and their association with TB treatment outcome using real-world data. We used logistic regression to associate TB treatment outcomes with CXR findings, including percent of lung involved in disease (PLI), cavitation, and Timika score, alone or in combination with other clinical characteristics, stratifying by drug resistance status and HIV (n = 2,809).

View Article and Find Full Text PDF

Background: Despite infliximab biosimilars becoming widely used in inflammatory bowel disease (IBD) patients, real-world non-medical switching is sparse. A biosimilar non-medical switch was launched in British Columbia in 2019, the first Canadian province to do so, from Remicade to an approved biosimilar (CT-P13 or SB2).

Aims: This study aims to obtain real-world evidence evaluating the clinical outcomes of non-medical switching from Remicade to the infliximab biosimilars.

View Article and Find Full Text PDF

Gastric extranodal NK/T-cell lymphoma (ENKTL) is a rare presentation of a rare disease. We report a 33-year-old woman presenting with epigastric pain, nausea, and vomiting. Endoscopic examination revealed gastric and duodenal ulceration.

View Article and Find Full Text PDF
Article Synopsis
  • Biosimilar medications for inflammatory bowel disease (IBD) are being adopted in Canada to reduce healthcare costs, with a nationwide switch expected to finish by the end of 2023, despite concerns regarding their effectiveness compared to originator products.* -
  • A systematic review of 43 studies involving over 7,400 IBD patients showed similar clinical outcomes in those switching to biosimilars as compared to those who continued on originator medications, particularly in terms of maintaining remission.* -
  • The results suggest that, while monitoring is still necessary, the efficacy and safety profiles of biosimilars appear reassuring, which could lead to significant healthcare savings in Canada.*
View Article and Find Full Text PDF

The goal of this study was to determine whether high-definition white light endoscopy with random biopsies (HD-WLR) or chromoendoscopy (HDCE) yielded a higher dysplasia detection rate in ulcerative colitis patients. Ulcerative colitis (UC) patients have a 2.4-fold increased future risk of developing colorectal cancer compared to the general population and require careful dysplasia screening modalities.

View Article and Find Full Text PDF
Article Synopsis
  • A study was conducted to understand factors that predict the failure of anti-TNF treatment in patients with perianal fistulas (PAF) related to Crohn's disease, as current knowledge is limited.
  • The research included a retrospective analysis of 221 adults who received their first anti-TNF therapy and used central MRI readings to develop a prediction model incorporating various clinical and imaging characteristics.
  • The developed models showed good accuracy in predicting treatment failure and performed better than existing PAF activity indices, offering valuable insights for managing PAF in Crohn's disease patients.
View Article and Find Full Text PDF

Purpose: This study compares performance of Timika Score to standardized, detailed radiologist observations of Chest X rays (CXR) for predicting early infectiousness and subsequent treatment outcome in drug sensitive (DS) or multi-drug resistant (MDR) tuberculosis cases. It seeks improvement in prediction of these clinical events through these additional observations.

Method: This is a retrospective study analyzing cases from the NIH/NIAID supported TB Portals database, a large, trans-national, multi-site cohort of primarily drug-resistant tuberculosis patients.

View Article and Find Full Text PDF

Background: Inflammatory bowel disease (IBD) is characterized by chronic inflammation of the gastrointestinal tract. Extra-intestinal manifestations such as pulmonary diseases have been reported. Chronic rhinosinusitis (CRS), an inflammatory condition of the sinonasal mucosa, has been associated with several lung diseases.

View Article and Find Full Text PDF

Background/aims: In patients receiving ustekinumab (UST) for treatment of Crohn's disease, there is no proven strategy to enhance or re-capture response. We assessed the utility of UST intravenous (IV) reinduction (~6 mg/kg) to achieve clinical, biochemical and endoscopic response or remission, in patients with partial or loss of response to UST maintenance therapy.

Methods: A multicentre, retrospective cohort study was performed.

View Article and Find Full Text PDF

Background: Treatment options for acute severe ulcerative colitis (ASUC) are limited. Tofacitinib, an approved treatment for moderate to severe ulcerative colitis, could be a potential rescue therapy for ASUC given its rapid onset of action.

Objective: To evaluate the effectiveness of tofacitinib in hospitalized patients with ASUC refractory to standard therapy in a real-world setting.

View Article and Find Full Text PDF

Background: Early onset colorectal cancer (EoCRC), diagnosed in those <50 years old, is increasing in incidence. We sought to differentiate characteristics and outcomes of EoCRC in patients with sporadic disease or preexisting conditions.

Methods: We evaluated 2,135 patients with EoCRC in a population-based cohort from the Canadian province of British Columbia.

View Article and Find Full Text PDF

Background: Accumulating evidence suggests that hyperbaric oxygen therapy (HBOT) may be effective for inflammatory bowel disease (IBD). Our systematic review aimed to quantify the effectiveness and safety of HBOT in various IBD phenotypes.

Methods: We performed a proportional meta-analysis.

View Article and Find Full Text PDF

Background: The natural history of perianal Crohn disease (PCD) after fecal diversion in the era of biologics is poorly understood. We assessed clinical and surgical outcomes after fecal diversion for medically refractory PCD and determined the impact of biologics.

Methods: We performed a retrospective, multicenter study from 1999 to 2020.

View Article and Find Full Text PDF

The TB Portals program provides a publicly accessible repository of TB case data containing multi-modal information such as case clinical characteristics, pathogen genomics, and radiomics. The real-world resource contains over 3400 TB cases, primarily drug resistant cases, and CT images with radiologist annotations are available for many of these cases. The breadth of data collected offers a patient-centric view into the etiology of the disease including the temporal context of the available imaging information.

View Article and Find Full Text PDF

Aims: Patient comfort during colonoscopy is an important measure of quality, which can improve patient satisfaction and compliance with future procedures. Our aim was to develop and validate a pain assessment tool based on objective behavioural cues tailored to outpatients undergoing colonoscopy: St. Paul's endoscopy comfort score (SPECS).

View Article and Find Full Text PDF

Introduction: Crohn's disease (CD) and ulcerative colitis (UC) are chronic, inflammatory bowel diseases (IBD). Each class and type of medication available for the treatment of IBD has distinct characteristics and long-term effects that a patient may consider. We present the results of qualitative research that aimed to develop a descriptive framework that outlines the most relevant disease and/or treatment attributes for IBD treatment decisions and focuses on the patient perspective.

View Article and Find Full Text PDF

Background: Fistulas occur in about 25% of patients with Crohn's disease (CD) and can be difficult to treat. The aim of this consensus was to provide guidance for the management of patients with perianal fistulizing CD.

Methods: A systematic literature search identified studies on the management of fistulizing CD.

View Article and Find Full Text PDF

Background: Wait times for gastroenterology care in Canada exceed recommended benchmarks set by the Canadian Association of Gastroenterology wait-time consensus. Patient-centered prioritization tools may help improve efficiency.

Methods: We conducted a survey on gastroenterology outpatients assessing their experience with accessing care, global health status and health care service utilization while waiting for a gastroenterology appointment.

View Article and Find Full Text PDF

Background: Nonpharmacologic factors, including patient education, affect bowel preparation for colonoscopy. Optimal cleansing increases quality and reduces repeat procedures. This study prospectively analyzes use of an individualized online patient education module in place of traditional patient education.

View Article and Find Full Text PDF

Background: Corticosteroid is an effective therapeutic option for inflammatory bowel disease flares, but its adverse effects may compromise treatment adherence and reduce patients' quality of life. There is lack of data on the incidence of corticosteroid-induced mood changes in this patient population, which may be underappreciated by healthcare providers in clinical practice and interfere with optimal care. This study aimed to determine the rate of mood changes in this patient population.

View Article and Find Full Text PDF

Background & Aims: Crohn's disease (CD) is a lifelong illness with substantial morbidity, although new therapies and treatment paradigms have been developed. We provide guidance for treatment of ambulatory patients with mild to severe active luminal CD.

Methods: We performed a systematic review to identify published studies of the management of CD.

View Article and Find Full Text PDF
Article Synopsis
  • Inflammatory bowel disease (IBD) is a complex autoimmune disorder prevalent in Canada, making its diagnosis tough due to similar symptoms with other gastrointestinal issues.
  • The study analyzed whether adding a faecal calprotectin (FC) test, which identifies active inflammation, is more cost-effective than traditional blood tests for diagnosing IBD in adults.
  • Results showed that although the FC test is slightly more expensive, it is likely cost-effective and significantly reduces the diagnosis time for IBD by about 40 days.
View Article and Find Full Text PDF